Smoker{3 s withdrawal kit

ABSTRACT

A set of smoking devices such as cigarette holders having air inlet orifices for admitting cooling air into a smoke stream drawn from a front end receptacle through a restricted annular passage against an annular shoulder on the front end of a barrier body disposed within a barrel extending from the receptacle to a mouthpiece stem. After impinging on the barrier shoulder the smoke passes radially outwardly into an elongated annular tar collection chamber, depositing a portion of its entrained tar therein. The orifices of the respective holders are of graduated sizes, whereby by rotating from the use of one holder to another the smoker may undergo successive stages of smoking in which the amount of tar removal is gradually increased so as to successively abate the desire for smoking.

limited States Patent Mount et all.

-4 1 .lan. 25, 1972 [541 MMEWS WHTHDRAWAL MIT 221 Filed: Aug. 13, 1970 21 Appl.No.: 63, 101

FOREIGN PATENTS OR APPLICATIONS 657,493 1/1929 France ..131/201 406,188 2/1934 Great Britain 1,421,739 11/1965 France ..131/201 Primary Examiner-Joseph S. Reich Attorney-Lynn H. Latta [57] ABSTRACT A set of smoking devices such as cigarette holders having air inlet orifices for admitting cooling air into a smoke stream drawn from a front end receptacle through a restricted annular passage against an annular shoulder on the front end of a barrier body disposed within a barrel extending from the receptacle to a mouthpiece stem. After impinging on the barrier shoulder the smoke passes radially outwardly into an elongated annular tar collection chamber, depositing a portion of its entrained tar therein. The orifices of the respective holders are of graduated sizes, whereby by rotating from the use of one holder to another the smoker may undergo successive stages of smoking in which the amount of tar removal is gradually increased so as to successively abate the desire for smoking.

7 Claims, 8 Drawing Figures [52] 11.5. C1 ..1311/187,131/201,131/198, 131/210 [51] l1nt.C1. ..A24i 13/00 [58] Field ofSear-ch ..131/187, 198, 198 A, 201, 210

[56] References Cited UNITED STATES PATENTS 222,841 12/1879 Robinson ..131/187 761,447 5/1904 Cassidy ..131/201 1,015,723 1/1912 Blackwood 131/198 A 2,104,777 1/1938 Silverthorne. 131/210 X 2,944,554 7/1960 Marguleas.. ..131/198 R 3,058,476 10/1962 Atkins.... ..131/187 3,137,303 6/1964 Shaw ..131/187 3,402,724 9/1968 Blount et al ....l3l/l98 R 3,472,238 10/1969 Blount et al ..131/201 X SIWOIKERS WITHDIRAWAL KIT BACKGROUND OF THE INVENTION In our prior U.S. Pat. No. 3,402,724 we have disclosed a withdrawal kit in which a single smoking device is successively fitted with replacement control rings having air inlet orifices of graduated inlet area, the holder being taken apart and a previously used control ring replaced by a new one with larger orifice area.

SUMMARY OF THE INVENTION The present invention improves upon the aforesaid withdrawal kit by eliminating the need for separate control rings and providing a simplified construction wherein the receptacle (e.g., cigarette holding socket) and barrel can be injection molded as a single part including an integral internal partition collar having a central port into which a reduced tip on the forward end of the barrier body is projected so as to define the annular smoke passage through which the smoke stream drawn from the receptacle impinges on the annular shoulder at the front end of the barrier body. The air inlet orifices are moulded in chordal slots in the side or sides of the receptacle, which makes it possible to use identical parts for all holders of the set, differing only in the area of the orifices.

The object of the invention is to provide such a simplified and improved construction.

Description In the Drawings:

FIG. I is a plan view of a first stage holder embodying the invention, with parts broken away and shown in section;

FIG. 2 is a front end view of the same;

FIG. 3 is an axial sectional view of the second stage holder taken as indicated by line 3-3 of FIG. 1;

FIG. 4 is a cross-sectional view thereof on line 4-4 of FIG.

FIG. 5 is a plan view of the receptacle-barrel part of the third stage holder;

FIG. 6 is a plan view of the same part for the fourth stage holder;

FIG. 7 is a plan view of the same part for the final stage holder; and

FIG. 8 is a plan view of the assembled kit.

Referring now to the drawing in detail, I have shown in FIG. l-4 thereof the construction which is identical for all five holtiers of the kit shown in FIG. 8, except for a different air inlet orifice area in each holder. Thus, each holder comprises a tubular mouth piece stem l0 having a draft passage 11 extending full length thereof. At the forward end of the stem is a shouldered tip 12 which is snugly fitted in the cylindrical bore of a barrel 113 which is thereby supported. Barrel 13 extends to an integral internal annular collar 14 defining a central opening 115. Beyond the collar 14 a cigarette holding receptacle 16 projects as an integral continuation of barrel 13.

A barrier element comprising a cylindrical barrier body 20 having an integral tail 211 of reduced diameter projecting rearwardly therefrom and mounted in draft passage II with a snug frictional fit, is thus supported within barrel 13 in coaxial relation thereto and radially spaced from the inner wall thereof to define an elongated annular tar-collection chamber 22 surrounding the barrier body 20. At its forward end, the barrier element has a reduced cylindrical tip 23 projecting from an annular radial barrier shoulder 24 defined by the forward end of body 20, and received in the opening 115 with a narrow clearance which provides an annular smoke passage 25. Shoulder 24 is axially spaced from the flat annular rear face of collar 14 to define therewith a thin disc-shaped expansion passage 27 extending from smoke passage 25 radially outwardly into tar collection chamber 22. Tall 21 is provided with diametrically opposed longitudinal grooves 26 which extend forwardly into barrier body 20 and thence radially outwardly with an L configuration which provides communication between chamber 22 and stem draft passage Ill.

Barrel-receptacle part I3, 116 and barrier part 20-23 can be detached from stem ltl for cleaning, and then reassembled to the stem.

In the lateral wall of receptacle 16, just forwardly of collar M, are diametrically opposed chordal internal webs 30 defining the bottoms of chordal slots 31 that are formed externally in the receptacle wall. The webs 30 of the first stage holder are imperforate, so that full-suction draft can be applied to receptacle 113, to develop a smoke stream of maximum intensity and temperature and minimum loss of tar. In each web 30 of the second stage holder (FIGS. 3 and 4) a single air inlet orifice 32 is bored or molded, to admit a minimum amount of cooling air into the smoke stream drawn from receptacle 16 into smoke passage 25. In subsequently used holders the number of orifices is successively increased for added area and correspondingly larger amount of admitted air with increasing percentage of tar removal.

Receptacle 16 is lined by a thin sheet metal cup 35 (FIG. 3) frictionally fitted therein and having a bottom 36 provided with a central aperture 37 in aligned, opposed relation to col-- lar opening 115. Webs 30, which project chordally into the bore of receptacle 16, are disposed between the bottom 36 and collar 14. Between bottom 36 and collar M there is defined an annular aspirating chamber 38 into which cooling air from the exterior is drawn by the aspirating effect of the smoke stream traversing between aperture 37 and collar opening 15.

As the smoke stream passes through the restricted smoke passage 25 it is speeded up by the passage restriction. The speeded-up stream impinges on the annular barrier shoulder 24 and deflected radially outwardly in expansion passage 27 with a sharp reduction in velocity and a resultant precipitation of tar in chamber 22. From this chamber a relatively slow flow carries the smoke into draft passage 111 while the collected tar is retained in chamber 22. Added admission of air in subsequently used holders increases the cooling effect and results in increased abstraction of tar from the smoke stream.

We claim:

ll. In a kit for use by a smoker for withdrawal from the smoking habit:

a plurality of smoking devices each comprising:

a tubular draft device including at a forward end a receptacle having passage means through which smoke can be drawn from a body of burning tobacco, a mouthpiece stem at its rear end, and a barrel disposed between, aligned with, and connecting said receptacle and stem;

an internal partition collar separating the interior of said barrel from said receptacle, said collar having a central opening;

a tar removal element including a tail fitted in and supported by the forward end of said stem, a barrier body carried by said tail, projecting forwardly into said barrel, radially spaced from the internal wall thereof to define a tar-collection chamber therebetween, and having at its forward end a relatively reduced tip extending into said opening, in closely spaced relation to said collar such as to define a restricted annular smoke passage providing for flow of smoke from said receptacle to said barrel, said barrier body at its forward end having a transverse annular shoulder in axially spaced opposed relation to said collar, thereby defining an annular disc-shaped passage extending radially outwardly from said annular smoke passage to said chamber;

and means defining an ambient air inlet orifice communicating with said annular smoke passage, for the admission of cool air into the smoke stream travelling from said receptacle into said chamber;

said plurality of smoking devices having respective orifices of graduated areas for admitting successively larger flows of cooling air with resultant increase of tar removal in successive stages of use of said kit.

2. A kit as defined in claim 11, wherein said orifice means comprises a chordal external groove in the side of said receptacle, said groove defined by a flat bottom from which said orifice extends into the interior of said receptacle adjacent and forwardly of said collar.

3. A kit as defined in claim 1, wherein said orifice means comprises a chordal web projecting into the interior of said receptacle immediately ahead of said collar.

4. A kit as defined in claim 3, wherein the graduation of orifice areas is provided for by a plurality of orifices in the smoking devices.

5. A kit as defined in claim 4, wherein said stem has smoke passage means therein and said tail has a longitudinal groove providing a communicating passage from said collection chamber to the draft passage means in said stem.

6. A kit as defined in claim 4, wherein said stem has a forward end snugly fitted in the rear end of said barrel and terminating in an annular forward end, said tail being of smaller diameter than said barrier body and the latter having a rear end abutted against said forward end of the stem;

said longitudinal groove extending into said rear end of the barrier body and communicating with said collection chamber.

7. A kit as defined in claim 3, further including a cigarette socket cup mounted in the forward end of said receptacle and having a bottom with a central opening providing said passage means, spaced axially forwardly of and adjacent said chordal web and in axially spaced, opposed relation to said collar so as to define therewith an annular aspirating chamber into which said ambient air is drawn through said orifice means by the aspirating effect of the smoke stream travelling from said bottom opening to said collar opening. 

1. In a kit for use by a smoker for withdrawal from the smoking habit: a plurality of smoking devices each comprising: a tubular draft device including at a forward end a receptacle having passage means through which smoke can be drawn from a body of burning tobacco, a mouthpiece stem at its rear end, and a barrel disposed between, aligned with, and connecting said receptacle and stem; an internal partition collar separating the interior of said barrel from said receptacle, said collar having a central opening; a tar removal element including a tail fitted in and supported by the forward end of said stem, a barrier body carried by said tail, projecting forwardly into said barrel, radially spaced from the internal wall thereof to define a tar-collection chamber therebetween, and having at its forward end a relatively reduced tip extending into said opening, in closely spaced relation to said collar such as to define a restricted annular smoke passage providing for flow of smoke from said receptacle to said barrel, said barrier body at its forward end having a transverse annular shoulder in axially spaced opposed relation to said collar, thereby defining an annular discshaped passage extending radially outwardly from said annular smoke passage to said chamber; and means defining an ambient air inlet orifice communicating with said annular smoke passage, for the admission of cool air into the smoke stream travelling from said receptacle into said chamber; said plurality of smoking devices having respective orifices of graduated areas for admitting successively larger flows of cooling air with resultant increase of tar removal in successive stages of use of said kit.
 2. A kit as defined in claim 1, wherein said orifice means comprises a chordal external groove in the side of said receptacle, said groove defined by a flat bottom from which said orifice extends into the interior of said receptacle adjacent and forwardly of said collar.
 3. A kit as defined in claim 1, wherein said orifice means comprises a chordal web projecting into the interior of said receptacle immediately ahead of said collar.
 4. A kit as defined in claim 3, wherein the graduation of orifice areas is provided for by a plurality of orifices in the smoking devices.
 5. A kit as defined in claim 4, wherein said stem has smoke passage means therein and said tail has a longitudinal groove providing a communicating passage from said collection chamber to the draft passage means in said stem.
 6. A kit as defined in claim 4, wherein said stem has a forward end snugly fitted in the rear end of said barrel and terminating in an annular forward end, said tail being of smaller diameter than said barrier body and the latter having a rear end abutted against said forward end of the stem; said longitudinal groove extending into said rear end of the barrier body and communicating with said collection chamber.
 7. A kit as defined in claim 3, further including a cigarette socket cup mounted in the forward end of said receptacle and having a bottom with a central opening providing said passage means, spaced axially forwardly of and adjacent said chordal web and in axially spaced, opposed relation to said collar so as to define therewith an annular aspirating chamber into which said ambient air is drawn through said orifice means by the aspirating effect of the smoke stream travelling from said bottom opening to said collar opening. 